[llvm-readelf][llvm-readobj][test] - Cleanup test cases for versioning sections.

[grimar]

Summary

Currently we have 2 tests for testing versioning sections:

1. elf-versioninfo.test
2. elf-invalid-versioning.test

The first one currently checks how versioning sections are dumped +
how tools dump invalid SHT_GNU_verdef section.

The second despite of its name contains only tests for invalid SHT_GNU_verneed section.

In this patch I`ve renamed elf-invalid-versioning.test->elf-verneed-invalid.test,
and moved a few tests from elf-versioninfo.test to a new elf-verdef-invalid.test.

It will help to maintain these and a new tests for broken versioning sections.

[grimar]

Committed as https://reviews.llvm.org/rGbb7d75ef1df3

llvm/test/tools/llvm-readobj/elf-verdef-invalid.test

+## Test how llvm-readobj/llvm-readelf tools handle invalid SHT_GNU_verdef sections.
+
+## Check that we report a warning when sh_link references a non-existent section.
+
+# RUN: yaml2obj %s --docnum=1 -o %t1
+# RUN: llvm-readobj -V %t1 2>&1 | FileCheck %s --check-prefix=INVALID-LINK-LLVM -DFILE=%t1
+# RUN: not llvm-readelf -V %t1 2>&1 | FileCheck %s --check-prefix=INVALID-LINK-GNU -DFILE=%t1
+
+# INVALID-LINK-LLVM: warning: '[[FILE]]': invalid section linked to SHT_GNU_verdef section with index 1: invalid section index: 255
+
+## TODO: llvm-readelf should also report a meaningful warning instead of an error.
+# INVALID-LINK-GNU: Version definition
+# INVALID-LINK-GNU: error: '[[FILE]]': invalid section index: 255
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_DYN
+  Machine: EM_X86_64
+Sections:
+  - Name:    .gnu.version_d
+    Type:    SHT_GNU_verdef
+    Link:    0xFF
+    Info:    0x0
+    Entries: []
+
+## Check that we report a warning when the sh_link field of a SHT_GNU_verdef section references a non-string table section.
+
+# RUN: yaml2obj %s --docnum=2 -o %t2
+# RUN: llvm-readobj -V %t2 2>&1 | FileCheck %s --check-prefix=INVALID-STRING-TABLE -DFILE=%t2
+# RUN: llvm-readelf -V %t2 2>&1 | FileCheck %s --check-prefix=INVALID-STRING-TABLE -DFILE=%t2
+
+# INVALID-STRING-TABLE: warning: '[[FILE]]': invalid string table linked to SHT_GNU_verdef section with index 1: invalid sh_type for string table section [index 0]: expected SHT_STRTAB, but got SHT_NULL
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_DYN
+  Machine: EM_X86_64
+Sections:
+  - Name:    .gnu.version_d
+    Type:    SHT_GNU_verdef
+    Link:    0x0
+    Info:    0x0
+    Entries: []
+
+## Check that we report a warning when we can't read the content of the SHT_GNU_verdef section.
+
+# RUN: yaml2obj %s --docnum=3 -o %t3
+# RUN: llvm-readobj -V %t3 2>&1 | FileCheck %s --check-prefix=INVALID-DATA -DFILE=%t3
+# RUN: llvm-readelf -V %t3 2>&1 | FileCheck %s --check-prefix=INVALID-DATA -DFILE=%t3
+
+# INVALID-DATA: warning: '[[FILE]]': cannot read content of SHT_GNU_verdef section with index 1: section [index 1] has a sh_offset (0xffffffff) + sh_size (0x0) that cannot be represented
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_DYN
+  Machine: EM_X86_64
+Sections:
+  - Name:     .gnu.version_d
+    Type:     SHT_GNU_verdef
+    Link:     .dynstr
+    Info:     0x0
+    Entries:  []
+    ShOffset: 0xFFFFFFFF
+DynamicSymbols:
+  - Name: foo
+
+## Check that we report a warning when a SHT_GNU_verdef section contains a version definition
+## that goes past the end of the section.
+
+# RUN: yaml2obj %s --docnum=4 -o %t4
+# RUN: llvm-readobj -V %t4 2>&1 | FileCheck %s --check-prefix=DEF-PAST-END -DFILE=%t4
+# RUN: llvm-readelf -V %t4 2>&1 | FileCheck %s --check-prefix=DEF-PAST-END -DFILE=%t4
+
+# DEF-PAST-END: warning: '[[FILE]]': invalid SHT_GNU_verdef section with index 1: version definition 1 goes past the end of the section
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_DYN
+  Machine: EM_X86_64
+Sections:
+  - Name:    .gnu.version_d
+    Type:    SHT_GNU_verdef
+    Link:    .dynstr
+    Info:    0x1
+    Entries:
+      - Version:    0
+        Flags:      0
+        VersionNdx: 0
+        Hash:       0
+        Names:
+          - FOO
+    ShSize: 1
+DynamicSymbols:
+  - Name: foo
+
+## Check that we report a warning when a SHT_GNU_verdef section contains a version definition
+## that refers to an auxiliary entry that goes past the end of the section.
+
+# RUN: yaml2obj %s --docnum=5 -o %t5
+# RUN: llvm-readobj -V %t5 2>&1 | FileCheck %s --check-prefix=AUX-PAST-END -DFILE=%t5
+# RUN: llvm-readelf -V %t5 2>&1 | FileCheck %s --check-prefix=AUX-PAST-END -DFILE=%t5
+
+# AUX-PAST-END: warning: '[[FILE]]': invalid SHT_GNU_verdef section with index 1: version definition 1 refers to an auxiliary entry that goes past the end of the section
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_DYN
+  Machine: EM_X86_64
+Sections:
+  - Name:    .gnu.version_d
+    Type:    SHT_GNU_verdef
+    Link:    .dynstr
+    Info:    0x1
+    Entries:
+      - Version:    0
+        Flags:      0
+        VersionNdx: 0
+        Hash:       0
+        Names:
+          - FOO
+    ShSize: 21
+DynamicSymbols:
+  - Name: foo
+
+## Check that we can dump a SHT_GNU_verdef section properly even if it contains version names strings
+## that overrun the linked string table.
+
+# RUN: yaml2obj %s --docnum=6 -o %t6
+# RUN: llvm-readobj -V %t6 2>&1 | FileCheck %s --check-prefix=PAST-STRTAB-END-LLVM --implicit-check-not="warning:" -DFILE=%t6
+# RUN: llvm-readelf -V %t6 2>&1 | FileCheck %s --check-prefix=PAST-STRTAB-END-GNU --implicit-check-not="warning:" -DFILE=%t6
+
+# PAST-STRTAB-END-LLVM:      VersionDefinitions [
+# PAST-STRTAB-END-LLVM-NEXT:   Definition {
+# PAST-STRTAB-END-LLVM-NEXT:     Version: 0
+# PAST-STRTAB-END-LLVM-NEXT:     Flags [ (0x0)
+# PAST-STRTAB-END-LLVM-NEXT:     ]
+# PAST-STRTAB-END-LLVM-NEXT:     Index: 0
+# PAST-STRTAB-END-LLVM-NEXT:     Hash: 0
+# PAST-STRTAB-END-LLVM-NEXT:     Name: <invalid vda_name: 5>
+# PAST-STRTAB-END-LLVM-NEXT:     Predecessors: []
+# PAST-STRTAB-END-LLVM-NEXT:   }
+# PAST-STRTAB-END-LLVM-NEXT: ]
+
+# PAST-STRTAB-END-GNU:      Version definition section '.gnu.version_d' contains 1 entries:
+# PAST-STRTAB-END-GNU-NEXT:  Addr: 0000000000000000  Offset: 0x000040  Link: 2 (.strtab)
+# PAST-STRTAB-END-GNU-NEXT:   0x0000: Rev: 0  Flags: none  Index: 0  Cnt: 1  Name: <invalid vda_name: 5>
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_DYN
+  Machine: EM_X86_64
+Sections:
+  - Name:    .gnu.version_d
+    Type:    SHT_GNU_verdef
+    Link:    .strtab
+    Info:    0x1
+    Entries:
+      - Version:    0
+        Flags:      0
+        VersionNdx: 0
+        Hash:       0
+        Names:
+          - FOO
+  - Name: .strtab
+    Type: SHT_STRTAB
+DynamicSymbols:
+  - Name: BAR
+
+## Check we report a warning when a version definition is not correctly aligned in memory.
+
+# RUN: yaml2obj %s --docnum=7 -o %t7
+# RUN: llvm-readobj -V %t7 2>&1 | FileCheck %s --check-prefix=MISALIGNED-DEF -DFILE=%t7
+# RUN: llvm-readelf -V %t7 2>&1 | FileCheck %s --check-prefix=MISALIGNED-DEF -DFILE=%t7
+
+# MISALIGNED-DEF: warning: '[[FILE]]': invalid SHT_GNU_verdef section with index 1: found a misaligned version definition entry at offset 0x0
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_DYN
+  Machine: EM_X86_64
+Sections:
+  - Type: Fill
+    Size: 0x1
+  - Name: .gnu.version_d
+    Type: SHT_GNU_verdef
+    Link: .dynstr
+    Info: 0x1
+    Entries:
+      - Version:    0
+        Flags:      0
+        VersionNdx: 0
+        Hash:       0
+        Names:
+          - FOO
+DynamicSymbols:
+  - Name: foo
+
+## Check we report a warning when an auxiliary entry is not correctly aligned in memory.
+
+# RUN: yaml2obj %s --docnum=8 -o %t8
+# RUN: llvm-readobj -V %t8 2>&1 | FileCheck %s --check-prefix=MISALIGNED-AUX -DFILE=%t8
+# RUN: llvm-readelf -V %t8 2>&1 | FileCheck %s --check-prefix=MISALIGNED-AUX -DFILE=%t8
+
+# MISALIGNED-AUX: warning: '[[FILE]]': invalid SHT_GNU_verdef section with index 1: found a misaligned auxiliary entry at offset 0x13
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_DYN
+  Machine: EM_X86_64
+Sections:
+  - Name:  .gnu.version_d
+    Type:  SHT_GNU_verdef
+    Flags: [ SHF_ALLOC ]
+    Link:  .dynstr
+    Info:  0x1
+## The byte offset to the auxiliary entry is 0x13, i.e. it is not correctly aligned in memory.
+    Content: "0000000000000100000000001300000000000000"
+DynamicSymbols:
+  - Name:    foo
+    Binding: STB_GLOBAL

llvm/test/tools/llvm-readobj/elf-verneed-invalid.test

-## Here we test how llvm-readelf/llvm-readobj behave when inputs have
-## invalid versioning sections.
+## Test how llvm-readobj/llvm-readelf tools handle invalid SHT_GNU_verneed sections.
 
 ## In the first case we have a SHT_GNU_versym section that refers to
 ## a version listed in a SHT_GNU_verneed section. That version has an
 ## empty name, making it invalid.
 
 # RUN: yaml2obj --docnum=1 %s -o %t1
 # RUN: llvm-readelf -V %t1 | FileCheck %s --check-prefix=GNU-VERNEED-NAME
 # RUN: llvm-readobj -V %t1 | FileCheck %s --check-prefix=LLVM-VERNEED-NAME

llvm/test/tools/llvm-readobj/elf-versioninfo.test

 ## Test how llvm-readobj/llvm-readelf tools dump versioning sections.
+## Check that SHT_GNU_versym dumper can see versions described in
+## SHT_GNU_verdef and SHT_GNU_verneed sections.
 
 # RUN: yaml2obj %s --docnum=1 -o %t1
 # RUN: llvm-readobj -V %t1 | FileCheck %s --check-prefix=LLVM
 # RUN: llvm-readelf -V %t1 | FileCheck %s --check-prefix=GNU
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64

 # GNU-NEXT:    0x0000: Version: 1  File: verneed1.so.0  Cnt: 5
 # GNU-NEXT:    0x0010:   Name: v1  Flags: BASE  Version: 0
 # GNU-NEXT:    0x0020:   Name: v1  Flags: WEAK  Version: 0
 # GNU-NEXT:    0x0030:   Name: v1  Flags: INFO  Version: 0
 # GNU-NEXT:    0x0040:   Name: v1  Flags: BASE | WEAK | INFO  Version: 4
 # GNU-NEXT:    0x0050:   Name: v2  Flags: <unknown>  Version: 5
 # GNU-NEXT:    0x0060: Version: 1  File: verneed2.so.0  Cnt: 1
 # GNU-NEXT:    0x0070:   Name: v3  Flags: none  Version: 6
-
-## Check that we report a warning when sh_link references a non-existent section.
-
-# RUN: yaml2obj %s --docnum=2 -o %t2
-# RUN: llvm-readobj -V %t2 2>&1 | FileCheck %s --check-prefix=INVALID-LINK-LLVM -DFILE=%t2
-# RUN: not llvm-readelf -V %t2 2>&1 | FileCheck %s --check-prefix=INVALID-LINK-GNU -DFILE=%t2
-
-# INVALID-LINK-LLVM: warning: '[[FILE]]': invalid section linked to SHT_GNU_verdef section with index 1: invalid section index: 255
-
-## TODO: llvm-readelf should also report a meaningful warning instead of an error.
-# INVALID-LINK-GNU: Version definition
-# INVALID-LINK-GNU: error: '[[FILE]]': invalid section index: 255
-
---- !ELF
-FileHeader:
-  Class:   ELFCLASS64
-  Data:    ELFDATA2LSB
-  Type:    ET_DYN
-  Machine: EM_X86_64
-Sections:
-  - Name:    .gnu.version_d
-    Type:    SHT_GNU_verdef
-    Link:    0xFF
-    Info:    0x0
-    Entries: []
-
-## Check that we report a warning when the sh_link field of a SHT_GNU_verdef section references a non-string table section.
-
-# RUN: yaml2obj %s --docnum=3 -o %t3
-# RUN: llvm-readobj -V %t3 2>&1 | FileCheck %s --check-prefix=INVALID-STRING-TABLE -DFILE=%t3
-# RUN: llvm-readelf -V %t3 2>&1 | FileCheck %s --check-prefix=INVALID-STRING-TABLE -DFILE=%t3
-
-# INVALID-STRING-TABLE: warning: '[[FILE]]': invalid string table linked to SHT_GNU_verdef section with index 1: invalid sh_type for string table section [index 0]: expected SHT_STRTAB, but got SHT_NULL
-
---- !ELF
-FileHeader:
-  Class:   ELFCLASS64
-  Data:    ELFDATA2LSB
-  Type:    ET_DYN
-  Machine: EM_X86_64
-Sections:
-  - Name:    .gnu.version_d
-    Type:    SHT_GNU_verdef
-    Link:    0x0
-    Info:    0x0
-    Entries: []
-
-## Check that we report a warning when we can't read the content of the SHT_GNU_verdef section.
-
-# RUN: yaml2obj %s --docnum=4 -o %t4
-# RUN: llvm-readobj -V %t4 2>&1 | FileCheck %s --check-prefix=INVALID-DATA -DFILE=%t4
-# RUN: llvm-readelf -V %t4 2>&1 | FileCheck %s --check-prefix=INVALID-DATA -DFILE=%t4
-
-# INVALID-DATA: warning: '[[FILE]]': cannot read content of SHT_GNU_verdef section with index 1: section [index 1] has a sh_offset (0xffffffff) + sh_size (0x0) that cannot be represented
-
---- !ELF
-FileHeader:
-  Class:   ELFCLASS64
-  Data:    ELFDATA2LSB
-  Type:    ET_DYN
-  Machine: EM_X86_64
-Sections:
-  - Name:     .gnu.version_d
-    Type:     SHT_GNU_verdef
-    Link:     .dynstr
-    Info:     0x0
-    Entries:  []
-    ShOffset: 0xFFFFFFFF
-DynamicSymbols:
-  - Name: foo
-
-## Check that we report a warning when a SHT_GNU_verdef section contains a version definition
-## that goes past the end of the section.
-
-# RUN: yaml2obj %s --docnum=5 -o %t5
-# RUN: llvm-readobj -V %t5 2>&1 | FileCheck %s --check-prefix=DEF-PAST-END -DFILE=%t5
-# RUN: llvm-readelf -V %t5 2>&1 | FileCheck %s --check-prefix=DEF-PAST-END -DFILE=%t5
-
-# DEF-PAST-END: warning: '[[FILE]]': invalid SHT_GNU_verdef section with index 1: version definition 1 goes past the end of the section
-
---- !ELF
-FileHeader:
-  Class:   ELFCLASS64
-  Data:    ELFDATA2LSB
-  Type:    ET_DYN
-  Machine: EM_X86_64
-Sections:
-  - Name:    .gnu.version_d
-    Type:    SHT_GNU_verdef
-    Link:    .dynstr
-    Info:    0x1
-    Entries:
-      - Version:    0
-        Flags:      0
-        VersionNdx: 0
-        Hash:       0
-        Names:
-          - FOO
-    ShSize: 1
-DynamicSymbols:
-  - Name: foo
-
-## Check that we report a warning when a SHT_GNU_verdef section contains a version definition
-## that refers to an auxiliary entry that goes past the end of the section.
-
-# RUN: yaml2obj %s --docnum=6 -o %t6
-# RUN: llvm-readobj -V %t6 2>&1 | FileCheck %s --check-prefix=AUX-PAST-END -DFILE=%t6
-# RUN: llvm-readelf -V %t6 2>&1 | FileCheck %s --check-prefix=AUX-PAST-END -DFILE=%t6
-
-# AUX-PAST-END: warning: '[[FILE]]': invalid SHT_GNU_verdef section with index 1: version definition 1 refers to an auxiliary entry that goes past the end of the section
-
---- !ELF
-FileHeader:
-  Class:   ELFCLASS64
-  Data:    ELFDATA2LSB
-  Type:    ET_DYN
-  Machine: EM_X86_64
-Sections:
-  - Name:    .gnu.version_d
-    Type:    SHT_GNU_verdef
-    Link:    .dynstr
-    Info:    0x1
-    Entries:
-      - Version:    0
-        Flags:      0
-        VersionNdx: 0
-        Hash:       0
-        Names:
-          - FOO
-    ShSize: 21
-DynamicSymbols:
-  - Name: foo
-
-## Check that we can dump a SHT_GNU_verdef section properly even if it contains version names strings
-## that overrun the linked string table.
-
-# RUN: yaml2obj %s --docnum=7 -o %t7
-# RUN: llvm-readobj -V %t7 2>&1 | FileCheck %s --check-prefix=PAST-STRTAB-END-LLVM --implicit-check-not="warning:" -DFILE=%t7
-# RUN: llvm-readelf -V %t7 2>&1 | FileCheck %s --check-prefix=PAST-STRTAB-END-GNU --implicit-check-not="warning:" -DFILE=%t7
-
-# PAST-STRTAB-END-LLVM:      VersionDefinitions [
-# PAST-STRTAB-END-LLVM-NEXT:   Definition {
-# PAST-STRTAB-END-LLVM-NEXT:     Version: 0
-# PAST-STRTAB-END-LLVM-NEXT:     Flags [ (0x0)
-# PAST-STRTAB-END-LLVM-NEXT:     ]
-# PAST-STRTAB-END-LLVM-NEXT:     Index: 0
-# PAST-STRTAB-END-LLVM-NEXT:     Hash: 0
-# PAST-STRTAB-END-LLVM-NEXT:     Name: <invalid vda_name: 5>
-# PAST-STRTAB-END-LLVM-NEXT:     Predecessors: []
-# PAST-STRTAB-END-LLVM-NEXT:   }
-# PAST-STRTAB-END-LLVM-NEXT: ]
-
-# PAST-STRTAB-END-GNU:      Version definition section '.gnu.version_d' contains 1 entries:
-# PAST-STRTAB-END-GNU-NEXT:  Addr: 0000000000000000  Offset: 0x000040  Link: 2 (.strtab)
-# PAST-STRTAB-END-GNU-NEXT:   0x0000: Rev: 0  Flags: none  Index: 0  Cnt: 1  Name: <invalid vda_name: 5>
-
---- !ELF
-FileHeader:
-  Class:   ELFCLASS64
-  Data:    ELFDATA2LSB
-  Type:    ET_DYN
-  Machine: EM_X86_64
-Sections:
-  - Name:    .gnu.version_d
-    Type:    SHT_GNU_verdef
-    Link:    .strtab
-    Info:    0x1
-    Entries:
-      - Version:    0
-        Flags:      0
-        VersionNdx: 0
-        Hash:       0
-        Names:
-          - FOO
-  - Name: .strtab
-    Type: SHT_STRTAB
-DynamicSymbols:
-  - Name: BAR
-
-## Check we report a warning when a version definition is not correctly aligned in memory.
-
-# RUN: yaml2obj %s --docnum=8 -o %t8
-# RUN: llvm-readobj -V %t8 2>&1 | FileCheck %s --check-prefix=MISALIGNED-DEF -DFILE=%t8
-# RUN: llvm-readelf -V %t8 2>&1 | FileCheck %s --check-prefix=MISALIGNED-DEF -DFILE=%t8
-
-# MISALIGNED-DEF: warning: '[[FILE]]': invalid SHT_GNU_verdef section with index 1: found a misaligned version definition entry at offset 0x0
-
---- !ELF
-FileHeader:
-  Class:   ELFCLASS64
-  Data:    ELFDATA2LSB
-  Type:    ET_DYN
-  Machine: EM_X86_64
-Sections:
-  - Type: Fill
-    Size: 0x1
-  - Name: .gnu.version_d
-    Type: SHT_GNU_verdef
-    Link: .dynstr
-    Info: 0x1
-    Entries:
-      - Version:    0
-        Flags:      0
-        VersionNdx: 0
-        Hash:       0
-        Names:
-          - FOO
-DynamicSymbols:
-  - Name: foo
-
-## Check we report a warning when an auxiliary entry is not correctly aligned in memory.
-
-# RUN: yaml2obj %s --docnum=9 -o %t9
-# RUN: llvm-readobj -V %t9 2>&1 | FileCheck %s --check-prefix=MISALIGNED-AUX -DFILE=%t9
-# RUN: llvm-readelf -V %t9 2>&1 | FileCheck %s --check-prefix=MISALIGNED-AUX -DFILE=%t9
-
-# MISALIGNED-AUX: warning: '[[FILE]]': invalid SHT_GNU_verdef section with index 1: found a misaligned auxiliary entry at offset 0x13
-
---- !ELF
-FileHeader:
-  Class:   ELFCLASS64
-  Data:    ELFDATA2LSB
-  Type:    ET_DYN
-  Machine: EM_X86_64
-Sections:
-  - Name:  .gnu.version_d
-    Type:  SHT_GNU_verdef
-    Flags: [ SHF_ALLOC ]
-    Link:  .dynstr
-    Info:  0x1
-## The byte offset to the auxiliary entry is 0x13, i.e. it is not correctly aligned in memory.
-    Content: "0000000000000100000000001300000000000000"
-DynamicSymbols:
-  - Name:    foo
-    Binding: STB_GLOBAL